What first grabs your attention at the Albertina galleries is the 210-foot-long titanium “flying” roof projection by Pritzker Prize winner Hans Hollein. Austria’s most controversial postmodern architect, Hollein shocked people with his 1990 glass Haas-Haus that reflects the Stephansdom cathedral. Another great Vienna cultural institution located in an old neoclassical ducal palace, the Albertina occupies a prime location along the old city wall, and holds the greatest assemblage of graphic prints in the world. Much of the Albertina space was used for storage until the 2008 overhaul by Hollein that cost $100 million and added the dramatic roof. Its million-piece collection of prints and 60,000-strong group of drawings includes works by figures from Leonardo to Dürer, along with photography, Impressionist paintings, and decorative arts.